What is Underfloor Heating System

While underfloor heating systems have been in use for many years, they have gained significant momentum recently. In numerous parts of the world, including Turkey, underfloor heating systems are developing in harmony with technology. The fact that underfloor heating systems are an efficient method, that they offer low costs, and that they can be applied to many spaces makes it even more attractive.

The most important aspect of an underfloor heating system is that it provides a homogeneous distribution of heat. As heat is stored in building structural elements, thermal comfort is not affected much by sudden temperature changes. This system allows you to use the space more dimensionally and functionally. In addition, it works with high performance as it is a system that significantly prevents heat loss. Underfloor heating systems save energy by using water at a lower temperature than conventional heating systems. KAS company, Turkish wholesaler of underfloor heating systems.

Kayalar Group is a firm that has been producing almost all components of underfloor heating systems for many years. This will be a significant advantage for our customers as we are both the producer and the designer of this system.

Different temperature values ​​are recommended for comfort and health in every living space in accordance with TS 2164. It is necessary to use quality materials, have good insulation, and make area-based floor heating calculations professionally in order to be able to increase the efficiency in heating systems. The KAS Therm brand was created for underfloor heating systems as a result of the professional R&D studies of KAS company.

The KAS Therm team conducts work for quality materials, quality infrastructure, and highly efficient air conditioning by closely keeping track of the constantly developing heating system techniques and technologies.

Underfloor-Heating-System-KAS Therm

What is an Underfloor Heating System?

Underfloor heating is a central heating system that provides indoor climate control by means using conduction and convection currents. It is very advantageous in terms of thermal comfort, ergonomics, energy efficiency, and safety.

It can be applied to any location and climate if the right engineering planning is made. In the KAS underfloor heating system, heating is provided with warm water with a temperature between 30°C and 50°C. Heat distribution is homogeneous and, contrary to other heating systems, no heat accumulation takes place on the ceiling.

Once the pipes are laid, the floor is covered with screed. Subsequently, flooring can be done with materials like tiles, ceramics, and parquet. All floor coatings can be used for underfloor heating. The heat conduction of materials like marble and ceramic is higher than parquet.

Advantages of an Underfloor Heating System

Real comfort: Underfloor heating provides a comfortable feeling of warmth throughout the environment.
Economical: It provides fuel savings because it works at low temperatures.
Invisible: It provides design freedom. It provides space savings as there is no radiator.
Health and Hygiene: Underfloor heating systems reduce the circulation of pollutants in the air. They do not cause dust formation. They do not dry out the humidity of the environment and, thanks to it, they reduce the health problems caused by excessive dry air.
Safety: It is one of the safest heating systems. As the floor of a house is warm, it protects people from diseases.
Efficient Heating: As the environment begins to warm up from the ground, it warms the feet first and the temperature is homogeneous at every spot of the environment.
Compatibility: It is compatible with all alternative energy sources. It provides very economical heating with solar energy and a heat pump.
Long Life: It is a system with a longer life than conventional heating methods.

Disadvantages of an Underfloor Heating System

As an underfloor heating system works by heating a large floor area, it is a system in which it will be appropriate to operate at a certain temperature constantly instead of turning it on and off frequently.

Areas of Use of Underfloor Heating

It can be used in all places like Houses, schools, hospitals, mosques, mass housing, Turkish baths, swimming pools, greenhouses, airports, roads, etc.

Reliability of the Underfloor Heating System

No addition must be done to the heater pipes we use for underfloor heating, it is safer to use a single pipe. In areas like hallways or kitchens, it becomes cold as the floor is covered with ceramic tiles.. This problem is eliminated with underfloor heating.

Underfloor Heating Components, Product Tree

Compact mixing circuit, flow collector, thermostatic collector, stainless collector set, thermostatic head, regulating valve, double-sided connection valve, 2-way and 3-way valve, manometer ball valve, thermometer ball valve, manual and automatic air relief valve cock, collector coupling with thermometer and manometer, integrated check valve, clamp, digital and analog room thermostat, actuator, distributor, Pe-Rt Pipe, collector cabinet, screed additive, styrofoam, and edge insulation tape.

Compact Mixing Circuit

This is the circuit that is used to adjust the temperature of the water coming from the heat source to the desired value with the heat sensing valve on it.

A compact mixing circuit consists of a circulation pump, mechanical vent whose angle is adjustable on the inlet and return line, inlet line detection sensor, inlet and return coupling connection, return line regulating valve, inlet and return line connection, integrated check valve, inlet line thermostatic control head, inlet and return collectors, and two clamps.

Flow Collector

Flow-adjusted collectors are the components in the system where the water flow takes place with the flow adjustment. It adjusts so that the flow of water is seen and that water switches to the flow we want. It provides the opportunity to work only on the line to which it is connected, without stopping the entire system in maintenance and repair circumstances.

KAS flowmeters have a setting option up to a maximum flow rate of 5 Lt/min.

Thermostatic Manifold

It is the component in the system where the flow of water takes place as controlled by an actuator.

Stainless Manifold Set

KAS stainless manifold collector set consists of 1 collector with flow rate adjustment, 1 collector with thermostat, 2 automatic air vent cocks, 2 coupling connections, 2 clamps, flowmeter as many as the number of connections and manual control cover.

Remote Conduction Thermostatic Head of the Inlet Line

The remote conduction thermostatic valve is mounted to the inlet line of the hot water coming from the heat source. It provides you with a comfortable environment and at the same time savings on your bill by keeping the temperature of the water coming from the heat source at the desired level. It detects the temperature of the water with the detecting sensor placed inside the collector.

Regulating Valve

It is the equipment used for adjusting the output flow of the water in the system.

Double Sided Connection Valve

It is the component that provides a connection between the mixing circuit and the collector.

2 Way Valve

Two-way valves used with an actuator connection are the components utilized for sending equal temperature water by controlling all the collectors in the system from a single point.

3 Way Valve

The three-way valve for underfloor heating has an inlet for hot water, a middle inlet for return, and an outlet for distributing the finished mixture at a certain temperature.

Ball Valve with a Manometer

It is the component used to see the pressure in the system.

Ball Valve with a Thermometer

The ball valve with a thermometer is the component used to see the temperature in the system.

Drain Cock with an Manual Purge Valve

It is the equipment that eliminates the heating problems of the system by removing the air in it.

Drain Cock with an Manual Purge Valve

They are devices with the properties of high rate and fast automatic air evacuation, sensitive air detection and reaction capability, and maintainability.

Thermometer Collector Joint

It is the component that provides the connection of the collector and the valve. It is used to see the temperature of the water in the system.

Manometer Collector Joint

It is the component that provides the connection of the collector and the valve. It is used to see the pressure of the water in the system.

Integrated Check Valve

It is the equipment that prevents the hot water coming from the heat source from passing to the return line.


Two clamps are used for the flow and thermostat collector set.

Digital Room Thermostat

KAS brand digital room thermostats stand out with their comfortable and ergonomic use. The operations of measuring and adjusting room temperature functions are easily performed with its understandable interface.

  • It is rotary and easy to use.
  • It has a digital screen.
  • It is fuse protected.
  • It has 230 V power supply capacity.
  • It has a 0.5°C control sensitivity.
  • It has a 5-30°C control temperature range.

Analog Room Thermostat

KAS Brand analog room thermostats stand out with their easy use and compact design.

  • It is rotary and easy to use.
  • It is fuse protected.
  • It has 230 V power supply capacity.
  • It has a 0.5°C control sensitivity.
  • It has a 5-30°C control temperature range.


It is the component that ensures that the circulation of the heating water in the underfloor heating zones are opened or closed. Pay attention to the fact that your damper differential pressure is not more than 2,5 bar (it is recommended to use a pressure regulator in your installation when necessary).


  • It is the component that provides communication between room thermostats and actuators.
  • Maximum 15 actuators with 6 zones
  • Maximum 18 actuators with 10 zones
  • Symbolic representation
  • Transparent Cover

Pe-Rt Pipe

It is a flat-tied polyethylene material. It has an oxygen barrier. It is resistant to heat and high pressures whose temperature resistance has increased. It has 70 °C – 6 bar. It cannot be used in conventional systems where there is a possibility that its temperature exceeds 70°C. Its size is Ø16×2. This material, which was developed without cross-linking, has advantageous properties like high and low temperature resistance, high compressive strength, very good flexibility and long service life. It is produced from recyclable raw material. KAS Plastic is produced in white, orange and red colors in our workshop.

Collector Cabinet

These are the cabinets used to make the collector system to be mounted in the area look orderly. The length of the KAS collector cabinets is 40, 60, and 80 cm, 60 cm and their depth is 11 cm.

Screed Additive

The floor heating pipe is the component used to accelerate the heat transfer and to provide a nice and smooth surface on the screed poured on its styrofoam .

Underfloor Heating Insulation Panel – Styrofoam

It is the component used to place the pipes in the modulation gaps calculated in underfloor heating flooring systems. Its raw material is EPS/Polystyrene foam, its density is 30 kg/m³, its thermal conductivity value is 0,036 W/mK, it has foil coating polystyrene and polyethylene material mixture, its dimensions are 72×72 cm, its base thickness is 2 cm, its set thickness is 2 cm, its modulation range between sets is 5-10-15-20 cm.

Edge Insulation Tape

It is a self-adhesive tape in underfloor heating systems, which is used to prevent heat loss from the edges to the walls.

Quality Control and Laboratory Tests

Quality Control: Quality control is carried out for every product produced in KAS workshops, at every stage, ranging from raw material to shipment, by our quality control unit.

Laboratory Tests: Tests, in which the performance values ​​of all the products we produce in the laboratory environment are measured, are conducted.

Made in Turkey

Made in Turkey

First Class Material
First Class Material
High Technology
High Technology